I am not sure if the problem I am having is anything to do with the Rock update but a few days ago I launched Cydia and I had about 8 updates so I started the update and it all gone fine untill it got stuck trying to respring... it just kept spinning so i rebooted the phone and now it just gets stuck on the apple logo ... if i leave it for a few mins then it gets detected by itunes and I can acccess the file system with ifun box...but its only for around 2 mins of access before the phone reboots.

so my question is there anything I can do in the file system to sort the phone?...restoring is last option as I have alot of data I don't want to loose.

If anyone could help I would much appreciate it.